Our 2nd 10-man is steadily progressing through DS and since I am not in it, I cannot comment firsthand on performance.
All I've seen are logs and I can't make much sense out of it...
http://worldoflogs.com/reports/1dh21...v1/details/32/ is a log from an almost full clear (on normal - attendance issues)
Not sure if you do need the armory - if you do, I can post it or you can easily find for yourself based on server name + toon name.
My thoughts so far:
* Much too high Flash Heal usage
* Much too low ProM and Renew usage